Clamp



FIG. 1 shows a perspective view of a clamp in the closed position, according to my design;

FIG. 2 shows a top plan view thereof;

FIG. 3 shows a bottom plan view thereof;

FIG. 4 shows a right side plan view thereof;

FIG. 5 shows a left side plan view thereof;

FIG. 6 shows a front plan view thereof; and,

FIG. 7 shows a rear plan view thereof. 

The ornamental design for a clamp, as shown and described. 